Preparation method of omega-amino fatty acid methyl ester and long-chain nylon

• Main Author: GAO QIHE
• Format: Patent
• Language: Chinese; English
• Published: 10.10.2023
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; CHEMISTRY; COMPOSITIONS BASED THEREON; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC CHEMISTRY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP

The invention relates to the technical field of organic synthesis, in particular to a preparation method of omega-amino fatty acid methyl ester and long-chain nylon. The preparation method of the omega-amino fatty acid methyl ester specifically comprises the following steps: S1, ester exchange: mixing long-chain dibasic acid # imgabs 0 #, long-chain dibasic acid dimethyl ester # imgabs 1 # methanol and a first organic solvent in the presence of a first catalyst, and carrying out ester exchange reaction to obtain long-chain dibasic acid monomethyl ester # imgabs 2 #; 4 # imgabs is prepared through an amidation reaction, and 6 # imgabs is prepared through a reduction reaction of 5 # imgabs, wherein n is greater than or equal to 8. The preparation method provided by the invention has the characteristics of short process route and clear and stable intermediate, and is suitable for batch production and continuous production. 本发明涉及有机合成技术领域，尤其涉及一种ω-氨基脂肪酸甲酯、长链尼龙的制备方法。所述ω-氨基脂肪酸甲酯的制备方法，具体包括：S1、酯交换：将长链二元酸#imgabs0#长链二元酸二